Thousands of flights to the East Coast were canceled as a potentially historic blizzard is set to dump up to three feet of snow in the Northeast from New York City to Boston. (Justin Sullivan/Getty Images)

(BCN and KQED) The anticipation of stormy weather on the East Coast has resulted in 69 flight cancellations at San Francisco International Airport this morning — 48 departures and 21 arrivals — the duty manager said.